Wanting to confirm if the friendlist in OW is no longer working for everyone? This might be a side-effect of GC being sunsetted, but I may have to look into it further.
My friends list works on Android
Yes friend lists are gone only friends of play games are showing.
Friends list still works for me on iOS. Latest update fixes notifications for me, too. Thx.
My friends list was blank on my iPad - I went to settings>Game Center and logged out/in and that fixed the issue.